// SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 2016 - 2018 Intel Corporation. All rights reserved. */ #ifndef __DAX_BUS_H__ #define __DAX_BUS_H__ #include <linux/device.h> struct dev_dax; struct resource; struct dax_device; struct dax_region; void dax_region_put(struct dax_region *dax_region); struct dax_region *alloc_dax_region(struct device *parent, int region_id, struct resource *res, int target_node, unsigned int align, unsigned long long flags); enum dev_dax_subsys { DEV_DAX_BUS, DEV_DAX_CLASS, }; struct dev_dax *__devm_create_dev_dax(struct dax_region *dax_region, int id, struct dev_pagemap *pgmap, enum dev_dax_subsys subsys); static inline struct dev_dax *devm_create_dev_dax(struct dax_region *dax_region, int id, struct dev_pagemap *pgmap) { return __devm_create_dev_dax(dax_region, id, pgmap, DEV_DAX_BUS); } /* to be deleted when DEV_DAX_CLASS is removed */ struct dev_dax *__dax_pmem_probe(struct device *dev, enum dev_dax_subsys subsys); struct dax_device_driver { struct device_driver drv; struct list_head ids; int match_always; }; int __dax_driver_register(struct dax_device_driver *dax_drv, struct module *module, const char *mod_name); #define dax_driver_register(driver) \ __dax_driver_register(driver, THIS_MODULE, KBUILD_MODNAME) void dax_driver_unregister(struct dax_device_driver *dax_drv); void kill_dev_dax(struct dev_dax *dev_dax); #if IS_ENABLED(CONFIG_DEV_DAX_PMEM_COMPAT) int dev_dax_probe(struct device *dev); #endif /* * While run_dax() is potentially a generic operation that could be * defined in include/linux/dax.h we don't want to grow any users * outside of drivers/dax/ */ void run_dax(struct dax_device *dax_dev); #define MODULE_ALIAS_DAX_DEVICE(type) \ MODULE_ALIAS("dax:t" __stringify(type) "*") #define DAX_DEVICE_MODALIAS_FMT "dax:t%d" #endif /* __DAX_BUS_H__ */